Patents by Inventor Charles W. Spehrly, Jr.

Charles W. Spehrly, Jr. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Document handler vacuum belt platen transport clamping system
    Patent number: 4831419
    Abstract: A document handler 20 for presenting documents to the platen 23 of a copier 10 for copying with a vacuum belt platen transport system 32 having document transporting belts 35 movable under a substantially planar vacuum plenum backing and imaging background surface 33a overlying the platen, and a vacuum system 33 for applying a partial vacuum to a document sheet being transported by the movable belts over the platen; with a clamping and unclamping system for moving the vacuum plenum backing and imaging background surface 33a against the platen 23 to flatten the belts 35 and a document thereon against the platen for copying.
    Type: Grant
    Filed: February 12, 1988
    Date of Patent: May 16, 1989
    Assignee: Xerox Corporation
    Inventors: Thomas C. Iaia, Jr., James A. Herley, Roger C. Male, William J. McLaughlin, Douglas A. McKeown, Robert W. Schaffer, Robert P. Siegel, Charles W. Spehrly, Jr.